PT  - JOURNAL ARTICLE
AU  - Julie Sardos
AU  - Catherine Breton
AU  - Xavier Perrier
AU  - Ines Van Den Houwe
AU  - Janet Paofa
AU  - Mathieu Rouard
AU  - Nicolas Roux
TI  - Wild to domesticates: genomes of edible diploid bananas hold traces of several undefined genepools
AID  - 10.1101/2021.01.29.428762
DP  - 2021 Jan 01
TA  - bioRxiv
PG  - 2021.01.29.428762
4099  - http://biorxiv.org/content/early/2021/01/31/2021.01.29.428762.short
4100  - http://biorxiv.org/content/early/2021/01/31/2021.01.29.428762.full
AB  - This study is an unprecedent exploration of the diversity of 226 diploid bananas genotyped with restriction-site-associated DNA sequencing data (RADseq) to clarify the processes that led to the creation of edible diploid AA bananas. This wide set included 72 seedy bananas, mostly M. acuminata from different genepools, and 154 edible, i.e. parthenocarpic and sterile, AA accessions obtained from genebanks and recent collecting missions. We highlighted the geographic organisation of the diversity of edible AAs and confirmed the admixed nature of many and further conducted introgressions tests within AAs from South East Asia and New Guinea. Lastly, taking advantage of the presence of an important number of M. acuminata ssp. banksii (22) and of AA from Papua New Guinea (76) in the set, we investigated the patterns of differentiation between wild and cultivated bananas seemingly belonging to the same genepool. We discovered a few cultivated AAs that may be of pure origins both in South-East Asia and in New Guinea. We also detected two undefined parental genepools in South East Asia for which regions of origin could be Thailand and a region between north Borneo and the Philippines, respectively. Finally, we suggest the existence of a third genepool in New Guinea island that might be a source population for both edible AAs and the local M. acuminata ssp. banksii.Competing Interest StatementThe authors have declared no competing interest.